假如你叫李明,你的一位美国笔友玛丽（Mary）要来你家做客,请你写给他一份邮件.1、向玛丽表示欢迎 2.介

Dear Mary,
It's so nice that you are coming to visit me!I will be very glad to have you here!
Now in China,it's the hottest season,so please prepare the coats needed.
My home is on the western street,which has a very good view of nature,after you come here ,I would like to show you my house.
Yours sincerely
Li Ming